GT500Knights 5/7/2014Did they also include the necessary oil into the system? Without the oil, the compressor will fail. There are many things that can go wrong with the ac system, and it is very prone to leaks. Even the smallest leaks can cause the refrigerant to leak from the system within a weeks time, preventing the system from turning on (safety feature for compressor if refrigerant level is too low)
Also I just looked up your car on alldata, 2 lbs is too much refrigerant. It's actually supposed to be about 1 lb 12 oz.